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Note 23 - Other liabilities (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure of defined benefit plans [line items]    
Overfunded Plan $ 15.8 $ 15.3
Net post employment benefits funded exposed as liabilities $ 5.0 5.1
Post-employment benefits    
Disclosure of defined benefit plans [line items]    
Weighted average duration of liabilities related to post-employment benefits 6 years  
Post-employment benefits | Unfunded    
Disclosure of defined benefit plans [line items]    
Actuarial losses (gains) arising from changes in demographic assumptions, net defined benefit liability (asset) $ (0.6) 0.1
Actuarial losses (gains) arising from changes in financial assumptions, net defined benefit liability (asset) $ (8.3) 4.1
Post-employment benefits | Unfunded | Actuarial assumption of discount rates [member]    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ (5.6)  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ 5.0  
Post-employment benefits | Unfunded | Actuarial assumption of expected rates of salary increases [member]    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ 2.7  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption (2.9)  
Post-employment benefits | Funded    
Disclosure of defined benefit plans [line items]    
Actuarial losses (gains) arising from changes in demographic assumptions, net defined benefit liability (asset) (0.9) 4.8
Actuarial losses (gains) arising from changes in financial assumptions, net defined benefit liability (asset) $ (1.3) $ 25.6
Post-employment benefits | Funded | Actuarial assumption of discount rates [member]    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ (11.7)  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ 9.9  
Post-employment benefits | Funded | Actuarial assumption of expected rates of salary increases [member]    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ 0.7  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ (0.8)